1978 Chevrolet Impala Differentials

Essential 1978 Chevrolet Impala Differentials

Yukon Gear – Dura Grip Positraction For GM 8.5" With 28 Spline Axles (Part No.26015)

Dura Grip Positraction For GM 8.5" With 28 Spline Axles

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$859.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.

Product Features:
  • Fits GM 8.5″ with 28 spline axles
  • 2.73 ratio and up only
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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Yukon Gear – 1541H Alloy Right Hand Rear Axle For ’58-’64 GM 55P (Part No.21632)

1541H Alloy Right Hand Rear Axle For '58-'64 GM 55P

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$451.99
Yukon 1541H alloy right hand rear axle for ’58-’64 GM 55P with a length of 30-1/4 inches, and 17 splines. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects.

Product Features:
  • 17 spline
  • 5 lug
  • 30.25″ long
  • Fits 1958-1964 GM passenger car
  • Right hand side
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National – Shaft Repair Sleeve (Part No.99166)

Shaft Repair Sleeve

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$34.99
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Motive Gear – Differential Carrier Gear Kit (Part No.GM7.6BI)

Differential Carrier Gear Kit

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$159.99


Product Features:
  • INTERNAL KIT-GM 7.6″ W/28 SPLINE
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Yukon Gear – Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt (Part No.33286)

Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt

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$9.99
5/16″-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″, 7.625″, 8.2″, 8.5″, 12 bolt passenger car and truck.

Product Features:
  • Cover bolt for Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, GM 7.5″, 7.625″, 8.2″, 8.5″ and 12 bolt passenger car and truck.
  • 1/2″ head
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Pro-King – Differential Bearing Cup (Part No.742G256)

Differential Bearing Cup

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$8.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • All products are designed to meet or exceed OE quality, form, fit and funtion.
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Yukon Gear – Positraction Internals For 8.5" GM With 28 Spline Axles (Part No.16052)

Positraction Internals For 8.5" GM With 28 Spline Axles

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$336.99
Yukon positraction internals (0.795″ diameter) for 8.5″ GM with 28 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects. This kit is compatible with Yukon Dura Grip or Eaton positractions. It will not fit a factory Gov-Loc positraction.

Product Features:
  • Spider gear kit
  • Fits GM 8.5″ with 28 spline Dura Grip positraction
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Felpro – Differential Cover Gasket (Part No.RDS 55029)

Differential Cover Gasket

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$7.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Unsurpassed quality you can trust
  • Validated for fit, form and function
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Yukon Gear – Chrome Cover For 8.6", 8.5" And 8.2" GM Rear (Part No.32017)

Chrome Cover For 8.6", 8.5" And 8.2" GM Rear

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$74.99
Chrome cover for 8.6″, 8.5″ and 8.2″ GM rear.

Product Features:
  • Fits GM 8.2″, 8.5″ and 8.6″
  • Chrome
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Powertrax – Grip LS Traction System (Part No.LS231230)

Grip LS Traction System

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$480.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Motive Gear – Differential Pinion Shim Kit (Part No.1100)

Differential Pinion Shim Kit

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$7.49
High-quality Differential Component Shim

Product Features:
  • SHIM KIT FITS-8.25-F7.5-AMC20-GM0
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Yukon Gear – 14 Plate Carbon Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron ‘Vette (Part No.16041)

14 Plate Carbon Clutches For GM 8.2", GM 8.5", 12T, 12P, Ford 8.8" & Cast Iron 'Vette

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$404.99
Product Features:
  • Clutch kit
  • Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ Dura Grip positraction
  • 14 piece kit
  • Carbon fiber clutches
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Yukon Gear – Billet Yoke For GM 12P And 12T With A 1350 U/Joint Size (Part No.41154)

Billet Yoke For GM 12P And 12T With A 1350 U/Joint Size

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$359.99
Yukon billet yoke for GM 12P and 12T with a 1350 U/joint size. 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits GM 12 bolt passenger car and truck
  • 30 spline
  • 1350 u-joint size
  • Outside snap ring design
  • 3.625″ snap ring span
  • 1.188″ cap diameter
  • U-bolt style
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Yukon Gear – Clutch Guide For GM 7.5" & 7.6" Dura Grip (Part No.33251)

Clutch Guide For GM 7.5" & 7.6" Dura Grip

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$10.99
Product Features:
  • Clutch guide
  • Fits GM 7.5″ and 7.625″ Dura Grip
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Yukon Gear – Minor Install Kit For GM 8.2" Differential (Part No.12052)

Minor Install Kit For GM 8.2" Differential

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$151.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush. (with Supershims).

Product Features:
  • Fits GM 8.2″
  • Included are a pinion seal, crush sleeve, complete shim kit, marking compound and brush.
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National – Bearings (Part No.LM603014)

Bearings

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$20.79
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Motive Gear – Differential Mini Spool (Part No.MS7.5-26)

Differential Mini Spool

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$98.99
Motive Gear Mini-Spools replace your stock spider and side gears with a solid billet mini-spool for 100% traction to both wheels. Not recommended for street applications.

Product Features:
  • Billet construction
  • Not recommended for street applications
  • GM7.5″ MINI SPOOL 26 SPLINE
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Yukon Gear – 8.6" GM 12P 12T & F8.8 Carrier Installation Kit (Part No.57010)

8.6" GM 12P 12T & F8.8 Carrier Installation Kit

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$121.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.6″, 12 bolt car and 12 bolt truck differential. This kit contains carrier bearings, races and shims.

Product Features:
  • Fits GM 12 bolt passenger car and truck and 8.6″
  • Includes carrier bearings and races and “super” carrier shim kit
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Motive Gear – Differential Mini Spool (Part No.MS7.5-28)

Differential Mini Spool

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$101.99


Product Features:
  • MINI SPOOL GM 7 1/2″ 28 SPLINE
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Yukon Gear – Bearing Race Driver (Part No.56023)

Bearing Race Driver

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$219.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M88010 race
  • All steel construction
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Yukon Gear – Ring Gear Bolt (Part No.33049)

Ring Gear Bolt

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$6.99
Ring gear bolt for GM 7.5″, 7.6″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ & 8.6″ IRS. 7/16″ x 20.

Product Features:
  • Ring gear bolt for GM 7.5″, 7.625″, 7.6″ IRS, 8.0″, 8.25″ IFS, 8.5″, 8.6″ and 8.6″ IRS
  • 7/16″ x 20
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Yukon Gear – Grizzly Locker For GM 8.5" & 8.6", 30 Spline, 2.73 & Up (Part No.28035)

Grizzly Locker For GM 8.5" & 8.6", 30 Spline, 2.73 & Up

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$1153.99
The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000!

Product Features:
  • Fits GM 8.5″ and 8.6″ with 30 spline axles
  • 2.73 and up ratio only
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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Yukon Gear – Pinion Install Kit For GM 12 Bolt Car Differential (Part No.13056)

Pinion Install Kit For GM 12 Bolt Car Differential

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$232.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits GM 12 bolt passenger car
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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Yukon Gear – Pinion Nut (Part No.33150)

Pinion Nut

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$11.99
Pinion nut for GM 12 bolt car & truck, 55-62 car & truck, 8.2″, 8.2″ Buick/Olds/Pontiac & 63-79 Corvette. 1 1/8″ socket, 7/8″ x 16 thread.

Product Features:
  • Pinion nut for GM 12 bolt car and truck, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and 1963-1979 Corvette
  • 7/8″ x 16 thread
  • 1 1/8″ socket
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Yukon Gear – Posi Spring Kit For GM 7.5", With Preload Plates (Part No.33206)

Posi Spring Kit For GM 7.5", With Preload Plates

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$153.99
Product Features:
  • Positraction spring kit
  • Fits GM 7.5″ and 7.625″ Dura Grip
  • Includes preload plates
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Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

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$59.99
Product Features:
  • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
  • Interlocking design makes installation much easier
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Motive Gear – Differential Crush Sleeve (Part No.9785792)

Differential Crush Sleeve

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$2.69
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both o
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Motive Gear – Differential Gear Install Kit (Part No.GM7.5IK)

Differential Gear Install Kit

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$49.99


Product Features:
  • MINI INSTALL KIT GM 7.5
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1978 Chevrolet Impala Differentials

Maybe you’re in the middle of a full rebuild of that 1978 Chevrolet Impala. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 271 different Differentials in our inventory ranging from $0.91 to $1,153.99. That means you can find the exact parts or products you need to keep that 1978 Chevrolet Impala running smoothly.

Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Chevrolet Impala. Valvoline, Felpro, and Driveworks are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1978 Chevrolet Impala, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 2,499 reviews in this category, some of the top rated parts include Bearings with 4.8 stars and Differential Ring And Pinion with 4.2 stars.

So if you’re in the market for aftermarket Differentials to keep your 1978 Chevrolet Impala rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1978 Chevrolet Impala Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Chevrolet Impala demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Impala the best it can be. Be sure to browse some of our top Differentials brands and parts.

FAQs for 1978 Chevrolet Impala Differentials

What are the most purchased Differentials for the 1978 Chevrolet Impala?

Out of 271 Differentials for the 1978 Chevrolet Impala, the most popular in our inventory are:
Differential Cover Gasket
from $9.99
(195)
Differential Cover Gasket
Rear Housing Cover Gaskets
Taper Bearing Set
from $10.29
(38)
Taper Bearing Set
Differential Bearings
DIFFERENTIAL GASKET
from $7.99
(45)
DIFFERENTIAL GASKET
Rear Differential Cover Gaskets

What are the top-rated 1978 Chevrolet Impala Differentials?

Top-rated Differentials for your 1978 Chevrolet Impala based on customer reviews/ratings are:
Bearings
from $16.99
(25)
Bearings
“Fit like it should no issues”
Differential Ring And Pinion
from $342.99
(23)
Differential Ring And Pinion
“So far so good.”
Differential Shaft Lock Bolt
from $5.99
(11)
Differential Shaft Lock Bolt
“great”